Dynamics AX 2012 R2 has just been launched amid the exciting year of launch for marquee Microsoft products. There are some major changes on this version which includes the Data Partitioning and Microsoft support has come out one exclusive document to capture these in addition to the usual New, Changed and Deprecated features of Dynamics AX 2012 R2.
Also heard that this version of AX is jam packed with features on the Retail platform, right from different channels to Retail POS level enhancements.
The complete list of documentations that are published by the Microsoft Support are available at this link.
Dynamics AX 2012 R2 can be downloaded from Customersource or Partnersource, here is the direct download link for Partnersource.